Elide hole checks on KeyedLoads of holey double arrays.

test/mjsunit/elide-double-hole-check-4.js

Index: test/mjsunit/elide-double-hole-check-4.js
diff --git a/test/mjsunit/regress/regress-2451.js b/test/mjsunit/elide-double-hole-check-4.js
similarity index 87%
copy from test/mjsunit/regress/regress-2451.js
copy to test/mjsunit/elide-double-hole-check-4.js
index 465e4e68c26f3e3e119cbaf82d50c8f83c6efa9a..e2a55055710d6aa222ca4c4aecfbe3926d9c5cca 100644
--- a/test/mjsunit/regress/regress-2451.js
+++ b/test/mjsunit/elide-double-hole-check-4.js
@@ -27,15 +27,13 @@
 
 // Flags: --allow-natives-syntax
 
-function f() {
-  assertEquals(-1.0, Math.round(-1.5));
-  assertEquals(-2.0, Math.round(-2.5));
-  assertEquals(-1.0, Math.round(-0.5000000000000001));
+function f1(a, i) {
+  return a[i] + 0.5;
 }
-
-f();
-f();
-%OptimizeFunctionOnNextCall(f);
-f();
-assertTrue(%GetOptimizationStatus(f) != 2);
-
+var arr = [0.0,,2.5];
+assertEquals(0.5, f1(arr, 0));
+assertEquals(0.5, f1(arr, 0));
+%OptimizeFunctionOnNextCall(f1);
+assertEquals(0.5, f1(arr, 0));
+Array.prototype[1] = 1.5;
+assertEquals(2, f1(arr, 1));